Hard reset D-Link DIR-827

Factory reset (Hard reset)Power ON the router. Locate the reset pin hole – it is on the back panel (next to the USB port) and is marked with red. Use a paper clip to press and hold down the button for 10 seconds. Release. Wait 30-60 seconds to access the router. 
FirmwareFirmware link
Default usernameadmin
Default password[leave blank]
Default IP address192.168.0.1